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General Information

Event name: CA-10-005
Country: CANADA
Nature of the harmful event:
 Mass mortalities
Event directly affected:
 Aquaculture Fish
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Harmful Algae Monitoring Program)
Event occurred before in this location: Yes
Individuals to contact: HAIGH, Nicky

Location & Date

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Location: Latitude: 50.469722, Longitude: -127.879722
General location information: Upper West coast of Vancouver Island, Pacific Region
HAB Area code(s): CA-35
Additional location information: Quatsino Sound; bloom affected two farm sites
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2010-07-15,
Additional date-related information: Bloom lasted about two weeks

Microalgae

Causative organism known: Yes
Causative Species/Genus: Heterosigma akashiwo (2 000 000 cells/L)
spiky,
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Bloom not stratified. Cell counts increased later in the bloom, but mortalities decreased.
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Updated at 01:37 on 16 Feb 2018
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES